Growth requirements of thermophilic aerobic microorganisms in mixed cultures for the treatment of strong wastes

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Surucu G.

WATER SCIENCE AND TECHNOLOGY, vol.40, no.1, pp.53-60, 1999 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 40 Issue: 1
  • Publication Date: 1999
  • Doi Number: 10.1016/s0273-1223(99)00363-7
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.53-60
  • Middle East Technical University Affiliated: No


The nutritional and temperature requirements of a naturally occurring mixed culture of thermophilic microorganisms were studied. Investigations concerning the effect of temperature on the growth characteristics of the mixed culture showed that the rate of growth was highest between 55 and 58 degrees C. Furthermore, it was found that the minimal nutritional requirements for maximum growth of these microorganisms included methionine, magnesium, calcium, and the necessary carbon, nitrogen and phosphorus sources. It was shown that a mixed culture was nutritionally less fastidious than the pure cultures of individual organisms isolated from the mixed culture; this observation illustrated the possibility of symbiotic growth of thermophilic microorganisms insofar as meeting their individual nutritional requirements. (C) 1999 IAWQ Published by Elsevier Science Ltd. All rights reserved.